PocoEmit字典增强功能

一、PocoEmit集合扩展中支持字典

• 支持字典互转
• 支持数组转字典(索引转化为字典主键)
• 支持列表转字典(索引转化为字典主键)

默认集合功能不支持实体属性转字典

为此开发了以下字典增强功能来实现实体转字典

二、实体和字典互转

1. ToDictionary

实体成员转化为object字典

User user = new() { Id = 3, Name = "张三" };
IDictionary<string, object> dic = _mapper.ToDictionary(user);

2. GetToDictionaryFunc

实体成员转化为object字典

var func = _mapper.GetToDictionaryFunc<User>();
User user = new() { Id = 3, Name = "张三" };
IDictionary<string, object> dic = func(user);

3. FromDictionary

object字典转化为实体

Dictionary<string, object> dic = new() { { nameof(User.Id), "3" }, { nameof(User.Name), "张三" } };
User user = _mapper.FromDictionary<User>(dic);

4. GetFromDictionaryFunc

object字典转化为实体

var func = _mapper.GetFromDictionaryFunc<User>();
Dictionary<string, object> dic = new() { { nameof(User.Id), "3" }, { nameof(User.Name), "张三" } };
User user = func(dic);

三、实体属性平铺

1. CreateDictionaryConvertFunc

• 委托编译生成,重复使用需要缓存
• 递归转化指定类型成员为字典
• 支持同类型字典
• 不支持数组和其他集合
• 相当于彻底平铺展开

var func = _mapper.CreateDictionaryConvertFunc<Student, Dictionary<string, int>>();
Student source = new()
{
    User = new() { Id = 2, Name = "Jxj" },
    Age = 17,
    Score = new() { { "语文", 95 }, { "数学", 96 } }
};
Dictionary<string, int> result = func(source);
// result.Count == 4

6. CreateDictionaryConvertFunc重载方法

• 委托编译生成,重复使用需要缓存
• 递归转化指定类型成员为字典
• 支持同类型字典
• 不支持数组和其他集合
• 相当于彻底平铺展开

var func = _mapper.CreateDictionaryConvertFunc<Student, int, IDictionary<string, string>>();
Student source = new()
{
    User = new() { Id = 2, Name = "Jxj" },
    Age = 17,
    Scores = new() { { "语文", 95 }, { "数学", 96 } }
};
IDictionary<string, string> result = func(source);
// result.Count == 4

源码托管地址: https://github.com/donetsoftwork/MyEmit ，也欢迎大家直接查看源码。

gitee同步更新:https://gitee.com/donetsoftwork/MyEmit

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